On a practical basis your 10 aircraft would need at least 50 pilots and perhaps 150 engineers. Unlike commercial airlines the operation of large-jet transport aircraft is relatively niche part of the whole organization. People with the right experience to make a new aircraft type happen quickly simply cannot be conjured-up in such a short timescale without seriously denuding the output of the existing fleets
There are probably a couple of hundred heavy jet pilots in the UK either unemployed or stuck in an airline they'd rather not be in. Why not make some special deals al la WW2 "Hostilities Only". I know several people who would be happy trucking around for a couple of years while the airline industry drags itself out of the mess it's in.